814 CAPRIFOLIACEAE 



8. S. oreophilus A. Gray. Shrub glabrous or somewhat pubescent, often 

 1 m. high; leaves rather thin, oblong to broadly oval, mostly acute, about 2 cm. 

 long; corolla-tube glabrous within, 4^5 times as long as the rounded, slightly 

 spreading lobes; fruit white, about 1 cm. long, ovoid. S. glabratus Eastw. Hill- 

 sides and river banks: Colo. Ida. Calif. Ariz. N.M. Submont. 



9. S. longiflorus A. Gray. Shrub glabrous or minutely pubescent, less than 



1 m. high; leaves spatulate-oblong to oval, thick and somewhat glaucous, 6-12 

 mm. long; corolla salverform, slender, 10-15 mm. long; tube glabrous within, 

 3-5 times as long as the oblong widely spreading lobes; fruit white, oblong; 

 stones oblong. Mountains: Utah Nev. Submont. 



6. XYLOSTEON Adans. BUSH OR FLY HONEYSUCKLE, TWINBERRY. 



Erect branching shrubs, with opposite simple leaves. Flowers axillary in 

 pairs, the common peduncle bibracteate at the summit. Bracts and bractlets 

 if present small, lanceolate or subulate. Hypanthium ovoid or globose. Calyx- 

 teeth 5, minute. Corolla funnelform-campanulats, more or less gibbous at the 

 base and more or less irregular; limb 5-lobed, more or less 2-lipped. Stamens 

 adnate to the corolla-tube; anthers linear or oblong. Ovaries 2-3-celled, those 

 of the two flowers often more or less united; ovules numerous in each cell, pendu- 

 lous, style slender; stigma capitate. Berry fleshy, 2-3-celled, few-seeded. 



Leaves pale or glaucous, thick, narrow, oblong; fruit black or black-blue with a bloom. 



1. X. coeruleum. 

 Leaves bright green, thin, usually broad; fruit red. 



Leaves glabrous, oval or broadly oblong. 2. X. utahense. 



Leaves pubescent and ciliate, ovate or broadly oval, often subcordate at the base. 

 Leaves rounded at the apex; bracts 1 mm., about one-third as long as the ovaries. 



3. X. ebractulatum. 

 Leaves acute or obtuse; bracts one-half as long as the ovaries or more. 



4. X. ciliatum. 



1. X. coeruleum (L.) Dum-Cours. Shrub erect, 5-10 dm. high; leaves 2-4 

 cm. long, rounded at the apex, pale and more or less pubescent beneath, gla- 

 brate above; flowers short-peduncled; bracts linear-subulate, longer than the 

 ovaries; corolla yellow, 12-15 mm. long, often pubescent; ovaries of the two 

 flowers wholly united, forming in fruit an oblong, bluish-black berry. Lonicera 

 coerulea L. Low grounds': Lab. Pa. Wis. Wyo. Calif. Alaska; Eurasia. 

 Submont. Mont. Je. 



2. X. utahense (Wats.) Howell. Shrub low and rather simple, perfectly 

 glabrous and with light bark; leaves usually broadly oval, obtuse at both ends, 

 glabrous, thin, 3-5 cm. long; bracts subulate, about half as long as the slightly 

 united, divergent ovaries; corolla light yellow, funnelform, nearly 2 cm. long; 

 fruit almost globular, red, 6-8 mm. in diameter. L. utahensis S. Wats. Mountain 

 woods: B.C. Utah Wyo. Mont. Submont. 



3. X. ebractulatum Rydb. Shrub divaricately branched, 1-2 m. high, 

 with gray bark; leaves short-petioled, thin, light green, somewhat glaucous and 

 hairy beneath, ciliate on the margins, elliptic to broadly ovate, obtuse, rounded 

 or cordate at the base, 2-6 cm. long; bracts small, 1 mm. long and scarcely one- 

 third as long as the divergent ovaries; bractlets none; corolla funnelform, about 



2 cm. long, hairy within; ovaries almost distinct; fruit red, 6-8 mm. in diameter. 

 L. ebractulata Rydb. In canons and open woods: B.C. Mont. Wyo. Ida. 

 Submont. 



4. X. ciliatum (Muhl.) Pursh. Shrub, 1-2 m. high, with glabrous branches; 

 leaves thin, bright green, ovate, rounded or cordate at the base, pubescent beneath 

 when young, more glabrate in age, strongly ciliate on the margins; bracts about 

 half as long as the divergent, almost distinct ovaries; bractlets minute, rounded; 

 corolla light yellow, almost regular, about 16 mm. long; fruit ovoid, red, about 

 6 mm. in diameter. L. ciliata Muhl. Moist woods: N.S. Pa. Mich. Sask. 

 Boreal. 



7. DISTEGIA Raf. SWAMP HONEYSUCKLE, BEARBERRY. 

 Erect shrubs, with opposite leaves and 2-3-flowered axillary peduncled clus- 

 ters. Bracts and bractlets close under the flowers, broad oval or ovate, often 



